/* do not display underline under normal case */
.md-typeset a {
  text-decoration: none;
}
a:focus,
a:hover {
  text-decoration: underline;
}

/* for portrait */
img[alt="portrait"] {
  width: 200px;
  display: block;
  margin: 0 auto;
}

@media (min-width: 700px) {
  img[alt="portrait"] {
    float: right;
    margin: 0 20px;
  }
}